Flood

Flooding and Ponding in Corn

June 22, 2018

Ponding or flooding of fields affects corn differently at different stages, depending on duration of flooding and other factors. Growers should assess the potential for nitrogen loss and increase scouting for corn disease in these fields.

Flooded soybean field in northeast Nebraska — **Figure 1.** Harvest is going to be challenging this year in flooded soybean fields in northeast Nebraska. (Photos by Amy Timmerman)

End of Season Flooding Effects on Soybeans, Harvest

October 13, 2017

October has had a wet start in most of the state, with some areas receiving several inches of rain. Considering potential impact on yield and ability to harvest these fields will be critical in the next few weeks.

Weeds in corn — Figure 1. A wet soybean field in south-central Nebraska. A pre-emergence herbicide was applied but due to continued excessive rainfall, the herbicide was washed away and weeds have started emerging.

Effect of Excessive Rainfall on Efficacy of Residual Herbicides Applied in Corn and Soybean

May 23, 2017

How excessive rainfall may affect the efficacy of residual herbicides is complex and influenced by multiple properties of the soil and the herbicide applied.

Flooded field in south central Nebraska — Multiple rains are leading to flooded field areas in southern Nebraska. (Photo by Jenny Rees)

Corn Survival in Ponded or Flooded Fields

May 19, 2017

Heavy rains of 2 to more than 4 inches in south central Nebraska May 15-19 have led to ponding or flooding in many fields. Survival of young corn plants under these conditions depends on several factors, described here.

Corn seedlings in flooded field — Figure 1. Corn seedlings growing in flooded field.

How Saturated Soils Affect Germination, Seedling Growth

May 12, 2016

Similar to last year’s heavy rains in early May, rain on May 9 and May 10-11 in portions of Nebraska have caused ponding and flooding across some fields. As of Sunday, May 8, USDA-NASS reported that 57% of Nebraska's corn was planted that is behind the 71% planting progress in 2015 but close to the

Aerial shot of grain bins in standing flood water — Flooded farmstead in northeast Nebraska where grain bins are in standing flood water. Here's how to manage stored grain which may have become contaminated by recent flooding. (Photo by Lee Valley, Inc.)

Flooding and Stored Grain

March 20, 2019

Updated: Flood-damaged grain is contaminated and at higher risk for mold. This Iowa State University story discusses how to manage stored grain that may have been exposed to flood waters.